Sex Steroids Flashcards
COCP ADRs
thromboembolism, MI, hypertension, impaired glucose tolerance, stroke, mood swings
Combined oral contraceptive pill mechanism.
21 days on, 7 days off Oestrogen and progesterone, can contain anti androgens Inhibit LH surge Alter cervical mucus Alter endometrium CYP450 metabolism
Progesterone only pill mechanism
Thickens and acidifies cervical mucus
Alters endometrium
POP ADRs
Weight gain, fluid retention, acne, mood changes.
HRT indications
Symptoms of menopause eg hot flushes, sweats
Helpful against osteoporosis
Not for CHD risk
HRT formulations
Usually progesterone and oestrogen combined
Oestrogen only can be given after hysterectomy
HRT ADRs
Endometrial, ovarian and breast cancer
Venous thromboembolism
Uterine bleeding
HRT mode of administration
Oral, transdermal, implant, transvaginal, ring
Tamoxifen
Anti oestrogen
Used in breast cancer
Cyproterone
Anti androgen
Used in some COCPs
Selective oestrogen reuptake modulators (SERMs)
Protect against osteoporosis
Don’t increase risk of breast cancer
Increase hot flushes
Raloxifine
SERM
Levonorgestrel
Emergency contraception
Give within 72 hours
Clomiphene
Oestrogen antagonist
Induces ovulation by preventing negative feedback at the pituitary